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Article: Gel vehicles are not inherently more irritating than creams.
- Article from:
- Journal of Drugs in Dermatology
- Article date:
- March 1, 2006
- Author:
CopyrightCOPYRIGHT 2006 Journal of Drugs in Dermatology, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract
Background: It has been thought that topical gels are inherently more irritating than topical creams. Nevertheless, the irritancies of topical products are potentially quite variable, and a priori assumptions about relative irritancy of gels versus creams may not be accurate.
Purpose: To determine whether a metronidazole gel formulation is more or less irritating to the skin compared to metronidazole creams.
Methods: A total of 32 normal, healthy volunteers were tested using irritancy patches with 0.75% metronidazole gel and cream, 1% metronidazole cream, and petrolatum (used as the "negative control"). Blinded observers evaluated the ...